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Resume / Timeline

Data EngineeringPython · Polars · DRFAutomation & PerformanceEN/PTRemote
60%
faster ingestion in high-volume event pipelines
35%
lower infrastructure cost with Polars and Parquet
90%
fewer compatibility issues after Python 3.12 modernization
PyPI
open-source package published as reusable data tooling
2020

Product engineering foundation

Started close to ERP features, integrations, dashboards, and real users.

2022

Data systems at scale

Moved into ETL, process mining, Airflow, and performance-oriented data pipelines.

2025

Technical writing

Turned engineering decisions into public articles, examples, and reusable explanations.

Now

Open-source tooling

Builds privacy-first data tools around Polars, packaging, tests, and documentation.

Timeline

  1. 2020
  2. 2022
  3. 2025

Skills & Technologies

Core Stack

Python (Polars, Pandas)
Django REST / FastAPI
Next.js, Tailwind

DevOps & Infra

Docker, GitHub Actions, CI/CD
AWS ECS / Cloudflare / Nginx

Databases

PostgreSQL
MySQL
SQLite

Languages

Portuguese
native
English
advanced

Tools

pytest
Make
Ruff
Black
Resume / Timeline | Jeferson Peter